Clean up inheritance tests

Author: roji

src/EFCore.Relational/Properties/RelationalStrings.Designer.cs

@@ -805,7 +805,7 @@
     <comment>Error RelationalEventId.ForeignKeyPropertiesMappedToUnrelatedTables string string string string string string string</comment>
   </data>
   <data name="LogForeignKeyTpcPrincipal" xml:space="preserve">
-    <value>The foreign key {foreignKeyProperties} on the entity type '{entityType}' targeting '{principalEntityType}' cannot be represented in the database. '{principalEntityType}' is mapped using the table per concrete type meaning that the derived entities will not be present in {'principalTable'}. If this foreign key on '{entityType}' will never reference entities derived from '{principalEntityType}' then the foreign key constraint name can be specified explicitly to force it to be created.</value>
+    <value>The foreign key {foreignKeyProperties} on the entity type '{entityType}' targeting '{principalEntityType}' cannot be represented in the database. '{principalEntityType}' is mapped using the table-per-concrete-type (TPC), meaning that the derived entities will not be present in {'principalTable'}. If this foreign key on '{entityType}' will never reference entities derived from '{principalEntityType}', then the foreign key constraint name can be specified explicitly to force it to be created.</value>
     <comment>Warning RelationalEventId.ForeignKeyTpcPrincipalWarning string string string string string string string</comment>
   </data>
   <data name="LogGeneratingDown" xml:space="preserve">

src/EFCore.Relational/Properties/RelationalStrings.resx

@@ -1,8 +1,6 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
-using Microsoft.EntityFrameworkCore.TestModels.InheritanceModel;
-
 namespace Microsoft.EntityFrameworkCore.Query.Inheritance;
 
 public class InheritanceQueryCosmosFixture : InheritanceQueryFixtureBase
@@ -30,14 +28,7 @@ protected override void OnModelCreating(ModelBuilder modelBuilder, DbContext con
     {
         base.OnModelCreating(modelBuilder, context);
 
-        modelBuilder.Entity<Animal>().ToContainer("Animals");
-        modelBuilder.Entity<Plant>().ToContainer("Plants");
-        modelBuilder.Entity<Plant>().Property<string>("Discriminator").ToJsonProperty("_type");
-        modelBuilder.Entity<Country>().ToContainer("Countries");
-        modelBuilder.Entity<Drink>().ToContainer("Drinks");
-        modelBuilder.Entity<KiwiQuery>().ToContainer("Animals");
-        modelBuilder.Entity<AnimalQuery>().ToContainer("Animals");
-        modelBuilder.Entity<BirdQuery>().ToContainer("Animals");
-        modelBuilder.Entity<KiwiQuery>().ToContainer("Animals");
+        modelBuilder.Entity<Root>().ToContainer("Roots");
+        modelBuilder.Entity<RootReferencingEntity>().ToContainer("RootReferencingEntities");
     }
 }